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Data Structures, Algorithms, & Applications in C++<BR>

Chapter 8, Exercise 45<BR>

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The code for path splitting is given below and in the files

<code class=var>ufsplit.*</code>.

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int Find(int e)

{// Return root of tree containing e.

 // Split path from e to root.

   int current = e,  // current node

       p,            // parent of current

       gp;           // grandparent of p



   // see if there are pointers to change

   if (root[current]) return current;

   p = parent[current];

   if (root[p]) return p;

   gp = parent[p];



   // at least one pointer to change

   while(true) {

      parent[current] = gp;

      if (root[gp]) return gp;

      // move current, p, and gp one

      // level up the tree

      current = p;

      p = gp;

      gp = parent[p];

      }

}

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